Method of making thread guides



1941- H. o. NELSON 2,230,652 7 METHOD OF MAKING THREAD GUIDES Filed July 25, 1939 flaw)? 0, 737623023 aim/EM Patented Feb. 4, 1941 UNITED STATES PATENT OFFICE METHOD OF MAKING THREAD GUIDES Harmon Nelson, Whitinsville, Mass., assignor to Whitin Machine Works, Whitinsville, Mass, a corporation of Massachusetts Application July 25, 1939, Serial No. 286,414

3 Claims. (01. 29-170) r This invention relates to thread guides, and provide a narrow slot 25 which may terminate in particularly to guides used in machines for winda round hole 26. ing or packaging silk, rayon or other fine threads. After forming the blank 20 as shown in Figs. 3 In such guides as commonly used, the thread is to 5, the end portions 21 are hardened by any 5 passed through a narrow slot between metal side suitable process. One side portion 30 of the 5 walls, which walls should present smooth surfaces blank 20 is then bent to the position shown in to prevent chafiing or breaking of the thread, Fig. 6, while the other side portion 3! remains in which is drawn through the slot at very high its original position. The sawed or milled inner speed. In such guides, also, the width of the slot surfaces of the end portions 21 are then carefully with reference to the thread size should be acfinished by grinding and polishing until a satis- 10 curately determined and carefully maintained. factory and exceptionally smooth surface is at- It is the general object of my invention to protained. vide an improved thread guide in which accurate The side portion 31 is then bent downward slot width and exceptional surface finish are alongside the portion 30, as indicated in Fig. 7, easily and economically attained. I also provide after which the guide G is secured in a clamp a new and effective method of producing my imor jig 33, with the two pants 21 held at the deproved thread guide and of conveniently repairsired distance apart by an inserted gauge 35 or ing or reconditioning the same. in some other convenient manner.

My invention further relates to arrangements While the parts are thus held and accurately and combinations of parts which will be hereinpositioned, I secure the portions 30 and 3| firmly 20 after set forth and more particularly pointed out together by soldering or brazing as indicated at in the appended claims. 31. I thus attain a thread guide having the A preferred form of the invention is shown in guiding faces of the portions 2'! highly polished the drawing, in which and accurately spaced apart. If these faces be- 25 1 s an d elevation f pa ts o a Winding come worn or roughened by long continued use, 25 machine in which my improved guide may be the solder'or brass may be easily melted, the parts used; returned to the position shown in Fig. 6, the Fig. 2 is a front elevation, looking in the direcinner faces repolished, and the guide may then n of e arrow 2 inFiga be clamped and soldered or brazed, all as pre- 3 is a p View O y improved thread viously described, thus-making the worn guide ex- 30 guide before finishing and b nding to shape; actly as good as new and cap-able of further Figs. 4 and 5 are end and side views, looking in long-continued use. the direction of the arrows 4 and 5 in Fi The novel thread guide disclosed is not claimed F 6 e V w Similar o 5 b S o herein as it forms the subject matter of a divi- Certain Derfbsin e different position; sion al application Serial No. 357,525, filed by me 35 Fig. '7 is a side elevation of the finished guide; September 20, 1940. and Having thus described my invention and the F 8 s a de a v leoking in the direction advantages thereof, I do not wish to be limited of the arrow 8 in Fig. to the details herein disclosed, otherwise than as 40 t" improved ad u de is part c set forth in the claims, but what I claim is: 40

signed for u e in a w din r p a in ma 1. The method of making a thread guide with as indicated in Figs. 1 and 2, which show a driven a Slotted t t d thread-guiding part winding roll l0 and shaft II, a traverse bar l2, a which comprises forming ub tantially flat thread uide G a d a thread T whlch is being metal blank with a thickened end part, slotting wound into a cylindrical package P. All of these id nd parrt. and a portion of said blank adjacent 45 parts may be of usual commercial construction, Said end part bending one thread-engaging 1301'. except for the specific structure and method of m of Said end part, out of the plane of the construction of he t ea uid Which W be blank and substantially away from the other end hereinafter descr bed. portion and to a new and self-retained position,

In the manufacture of my improved guide, I smoothly finishing the thread-guiding faces of 50 first form a Steel blank 20 as Shown in both portions of said end pant while separated which blank is slotted at 2| for attachment by and positioned in difierent but parallel planes, screws 2'2 to the traverse bar I2. The opposite bringing said end portions to adjacent threadend of the blank 20 is of increased thickness, and guiding relation, setting the transverse distance is subjected to a sawing or milling operation to between the parallel thread-guiding faces of said 55 end portions to an inserted gauge, and securing said end portions together while in gauged relation by application of extraneous metal thereto.

2. The method of making a thread guide with a slotted out-turned thread-guiding end part which comprises forming a substantially fiat metal blank with a thickened end part, slotting said end part and a portion of said blank adjacent thread-guiding faces of said end portions to an inserted gauge, and securing said end portions together while in gauged relation by application of extraneous metal thereto.

3. The method of making a. thread guide with a slotted out-turned thread-guiding end part which comprises forming a. substantially fiat metal blank with a thickened end part, slotting said end part and a portion of said blank adjacent said end part, hardening said slotted end part, bending one thread-engaging portion of said end part out of the plane of the blank and substantially to operative thread-guiding position and substantially away from the other end portion, said displaced end portion being permanently located in its new and operative position, smooth- 1y finishing the parallel thread-guiding faces of both portions of said end part while thus separated but positioned in parallel planes, bending the second end portion to thread-guiding operative position adjacent said first portion, setting the transverse separation between the parallel threadguiding faces of said end portions to an inserted gauge, and securing said parts together while held in gauged relation by application of extraneous metal thereto.

HARMON O. NELSON. 

